Juan Martin del Potro and Alexander Zverev will meet at the Mexican Open after quarter-final wins.

Del Potro, Zverev into Acapulco semis

Juan Martin del Potro overcame Dominic Thiem to set up a blockbuster Mexican Open semi-final against Alexander Zverev.

Del Potro made it four wins in as many meetings with Thiem thanks to a 6-2 7-6 (9-7) victory in their quarter-final in Acapulco on Thursday.

The Argentinian managed to break serve three times against Thiem, the third seed and 2016 champion.

Del Potro gave up a break lead in the second set, but he edged through a tie-break after saving three set points.

Awaiting him in the last four is Zverev, the second seed untroubled in a 6-4 6-1 win over Ryan Harrison.

The German second seed needed just 67 minutes to progress as Harrison failed to take his chances, unable to convert any of his four break points.

On the other side of the draw, Kevin Anderson and Jared Donaldson will meet in a semi-final.

Anderson, the 2014 runner-up, served 18 aces in a 7-6 (7-5) 6-4 victory over Hyeon Chung.

Donaldson lost just two points on serve in a 6-3 6-1 thrashing of Spaniard Feliciano Lopez.

At the Brasil Open in Sao Paulo, last year's runner-up Albert Ramos-Vinolas moved into the quarter-finals, but two seeds fell.

Guido Pella was edged by Nicolas Jarry 6-7 (2-7) 6-4 7-6 (7-2), while Gael Monfils went down to Horacio Zeballos 6-3 3-6 6-3.

Rogerio Dutra Silva brushed past Nicolas Kicker to also reach the last eight.

Jaziri wins again in Dubai

Jaziri shines on despite floodlight failure in Dubai

Following his upset win against Grigor Dimitrov, Malek Jaziri marched on at the Dubai Tennis Championships on Wednesday.

Stephens survives in Acapulco

Stephens survives in Acapulco, Tsurenko eases through to quarters

US Open champion Sloane Stephens advanced in Acapulco thanks to Wednesday's 5-7 7-6 (8-6) 6-0 victory over Dutch qualifier Arantxa Rus.

Del Potro outlasts Ferrer

Del Potro outlasts Ferrer as Zverev and Thiem advance

Juan Martin del Potro made it through to the last eight by outlasting Spanish veteran David Ferrer 6-4 4-6 6-3 in Acapulco on Wednesday.

Wawrinka ends hard-court season

Wawrinka to miss Indian Wells and Miami Open

Stan Wawrinka feels he would be better off on the practice courts rather than playing at Indian Wells or in Miami.

Nadal pulls out of US events

Nadal withdraws from Indian Wells and Miami Open

A hip injury will prevent Rafael Nadal from playing at Indian Wells and he will also miss the Miami Open.